With Node and npm up-to-date, you are now ready to upgrade your version of Angular. The Angular ecosystem has been engineered to make frequent updates of your version as painless as possible. Minor version updates should be straightforward and quick and starting with version 6.0.0; major version upgrades should be easier with the new ng update command that ships with Angular CLI. Paired with the update guide published on update.angular.io and various helper tools specific to your upgrade path, updating Angular is straightforward. In this section, we will go over how you can update your Angular app presuming a scenario of upgrading from version 5.2 to 6.0. The instructions should largely remain the same, with any variance or future changes documented in https://update.angular.io/.
Keep in mind that Angular doesn't recommend skipping major version numbers when...